Protein is a substance which is considered a building block for all living things.
Explanation:
The body of all the organisms are made up of protein. Protein is made up of small units called amino acids. There are some food which contains protein. When the organisms eat these types of foods, the body consumes that protein and change into amino acid and build the muscles of the organisms.
More recently, stem cells from the blood stream (called peripheral blood stem cells) and umbilical cord stem cells have been used to treat some of the same blood-based diseases.
